Apparatus for mining



R. J. MEYER ABPARATUS FOR MINING Sept. 27, 1932.

Filed SeptH 11,` 195C ATTORNEYS Patented Sept. 27, 1932 i.; 1

entren STATES PATENT 'oF-Fics' Application led September 11., 1 930. Serial No. 481,147.

My invention consists of an improved aptory results in breaking other substances. paratus for breaking coal deposits without rlhe. device as shown in the drawing is prethe use of explosives, ferred by reasn of its simplicity, but changes Another object is to provide a simple and and modifications in the construction thereof 5 efficient device for carrying the above stated may l0? H13-Cle Within the SCOPGO helppeldif method into practise. ed C lalmS. l

In the accompanying drawing in which like v Trie use o f explosives in mining isalways reference characters designate corresponding COIlIlBCted With a certain amount of risk and piu-ts in the two Views, danger and these hazards are entirely avoid- 1n Figure l is a longitudinal section of the deed by th@ 95 0f th@ PlTeSeIltlIlVeIltlOD- tu vice in its operative position in a bore of a Any uld'lessuelly bepmpkyed Within Cogli fO-maton, and the scope of the invention, although the'use of Figure 2 is a transverse section along the hyd-rauh@ Pressre 1S Pfefe'ld line 2-2, Figure 1. The reenforced front-end of they bag lta- 15 The device consists of a flexible tubular Pers t0 the HXlOl@ Wall 0f the Saule to pro- 65 bag 5 reenforced at its ends, as shown at 6 duce a gradually dlmlmshlng IeSlStmC@ t0 and 7. The reenforced front end of the tube the GXPIISlV@ pressure of fluid admitted to has an axial bore for the insertion of a nozzlethe bag thlOllg'h the bore/. This is of particpipe 8 which at its outer extremity connects U12II'-V2L1116-W16I1 the resistance to the disi with the flexible delivery-conduit 9 of a IUPW@ 31551011 0f the BXPaIdmg bag 1S less source of fluid-pressure, indicated at 10, by d'0 the IHOUth O the hOle 16, as usually ocmeans of a C0up1ng12- curs, particularly when the formation in A rod, cable or other similar brace 13, ex- WhlCh the hOl? 1S OTIHSl, 1S undercut. tending lengthwise through the tube, is an- What I Clalm and deSlre t0 Secure by Let- 23 chored in the reenforced end-portions thereters Patent S of, by means of metal plates 14 and 15, and l. Anapplianoe of the character described serves to prevent excessive elongation of the COIlPTlSlUg 2L O Ile-PIGCS bag having a tubular bag by the pressure fluid admitted thereto leXlbl@ Wall integral Wltll @Ompaliltlvly through the n0ZZ1e-tube 8, heavy end-portions, one of said end-portions 3? In the operation of the device, the tubular having a here te admit a pressure-fluid t0 e0 beg is inserted in a hole i6 bored in the usual the bag, and means for Supplying a pressure manner in an earth formation, shown at 17, it fluld JG0 the bore. being desirable that the tube fits within the 2- A IlappllaIlCe Of the character described bore. rlhe nozzle-tube projecting outside the COmpI'lSlIlg a Onepiece bag having a tubular TV3 bore, is connected with a source of fluid unflexible Wall integral with comparatively f1.3 der pressure, water or other liquid being preheavy end-portions, one of said'end-portions ferred. tapering interiorly of the bag to the liexib-le ri'fhe fluid entering the bag, inflates the flexiwall, and having a bore to admit a pressureble wall 18 thereof, and the pressure exerted 1fluid to the bag, and means for supplying 4"! by the fluid upon the coal formation through a pressure fluid to the bore. SG the intermediary of the wall, will break and 3. An appliance of the character described disrupt the coal or other substance and thus comprising a one-piece bag having a tubular facilitates its removal without the use of exflexible wall integral with comparatively plosives. The rod or cable extending through heavy end-portions, one of said end-portions #-5 the bag prevents its stretching lengthwise, so having a bore to admit a pressure-fluid to that the entire force of the fluid is directed the bag and tapering interiorly of the bag laterally upon the flexible wall of the tube. from the bore to the flexible wall, and means It is to be understood that while my invenfor supplying a pressure fluid to the bore.

tion is particularly adapted for use in mining 4. An appliance of the character described 50 coal7 it may be used with equally satisfaccomprising a one-piece bag having a tubular 100 flexible Wall integral With comparatively heavy end-portions, one of said end-portions having a bore to admit a pressure-fluid to the bag, a brace extending interiorly of the bag and anchored in its end-portions to oppose excessive elongation, and means for supplying a pressure fluid to the bore., Y

5. An appliance of the character described comprising a one-piece bag having a tubular flexible Wall integral With comparatively heavy end-portions, one of' said end-.portionshaving a bore to admit a pressure-fluid to the bag, anchors embedded in the end portions, a brace extending interiorly of the bagr in connection Withfthe anchors, and means for supp-lying a pressure fluid to the bore.

6. An: appliance of the character described comprising a 'one-piece bag having a tubular flexible wall integra-l with comparatively heavy end-portions, one of said end-portions tapering interiorly of the bag to thefflexible wall and having a bore to admit a pressurefluid' to the bag', a brace extending interiorly of the bag and anchored in the end portions to oppose excessive elongation, and means for supplying a pressure fluid to the bore.

In testimony whereof I hereunto alfix my signature.

RALPH J. MEYER.

Levage? 

